40725505 has 16 divisors (see below), whose sum is σ = 50322384. Its totient is φ = 31621120.

The previous prime is 40725499. The next prime is 40725511. The reversal of 40725505 is 50552704.

It is an interprime number because it is at equal distance from previous prime (40725499) and next prime (40725511).

It can be written as a sum of positive squares in 8 ways, for example, as 3283344 + 37442161 = 1812^2 + 6119^2 .

It is not a de Polignac number, because 40725505 - 2⁹ = 40724993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52299 + ... + 53071.

It is an arithmetic number, because the mean of its divisors is an integer number (3145149).

Almost surely, 2^40725505 is an apocalyptic number.

It is an amenable number.

40725505 is a deficient number, since it is larger than the sum of its proper divisors (9596879).

40725505 is a wasteful number, since it uses less digits than its factorization.

40725505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076.

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 40725505 is about 6381.6537825238. The cubic root of 40725505 is about 344.0504731466.

The spelling of 40725505 in words is "forty million, seven hundred twenty-five thousand, five hundred five".